Journal article

Longitudinal heat flow calorimetry: A method for measuring the heat capacity of rock specimens using a divided bar

A Antriasian, G Beardsmore

Geotechnical Testing Journal | Published : 2014


We present a method for measuring the heat capacity of a rock specimen using a divided bar apparatus in a "transient" mode. The specific heat capacity can be derived if the mass of the specimen is known. Thermal conductivity can be measured during a steady-state phase of the measurement process, and longitudinal thermal diffusivity can also be derived if the specimen volume (and hence density) is measured. A divided bar delivers a longitudinal flow of heat through a rock specimen and is conventionally used only in a steady-state mode for thermal conductivity measurements. Our method employs a time-series record of temperature changes at four points along the divided bar assembly to compare t..

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